Speed-regulator for explosive-engines.



PATENTED FEB. 21, 1905.-

0. R; DAELLENBAGH. SPEED REGULATOR FOR EXPLOSIVE ENGINES.

APPLIOATION FILED DEO.16. 1903.

INVENTOR WITNESSES.-

No. 783,104. PATENTED FEB. 21, 1905, G. R. DAELLENBACH.

SPEED REGULATOR FOR EXPLOSIV'E ENGINES.

APPLIOATION FILED DEC. 16, 1903.

2 SHEETS-SHEET z.

WITNESSES.- 'ZNVENTOR v AMAQME 6/ M I B a Attorney STATES Patented February 21, 1905.

PATENT OFFICE.

CHARLES R. DAELLENBACH, OF ELLWOOD CITY, PENNSYLVANIA, AS- SIGNOR TO DAELLENBACH GAS ENGINE COIYIPANY, OF PITTSBURG,

PENNSYLVANIA.

SPEED-REGULATOR FOR EXPLOSlVE-ENGINES.

SPECIFICATION forming part of Letters'latent No. 783,104, dated February 21, 1905.

Application filed December 16, 1908. Serial. No. 184,427.

To all whom it nan/y concern:

Be it known that I, CHARLEs R. DAELLEN- EACH, a citizen of the United States, residing at Ellwood City, in the county of Lawrence and State of Pennsylvania, have invented new i and useful Improvements in Speed-Regulators for Explosive-Engines, of which the following is a specification.

My invention pertains to explosi ve-engines, more particularly explosive-engines of the rear-compression type; and it has for one of its objects to provide simple and eflicient means for automatically shutting off the supply of explosive mixture to the explosion chamber when the engine attains an excessively high rate of speed and for reestablishing said supply when the speed of the engine falls to normal.

Another object of the invention is to provide, in an explosive-engine, a construction whereby the exhaust is utilized to heat a hot tube sufliciently to enable the said tube, in conjunction with high compression, to ignite explosive mixture in the explosion-chamber. With the foregoing in mind the invention will be fully understood from the following description and claims when taken in connection with the accompanying drawings, forming part of this specification, in which Figure 1 is a vertical section illustrating an explosive-engine constituting the preferred embodiment of my invention. Fig. 2 is a detail view, partly in elevation and partly in section, taken at right angles to Fig. 1 and illus- 'trating the mechanism for shutting off the supply of explosive-mixture to the explosionchamber when an excessively high rate of speed is attained. Fig. 3 is an enlarged detail horizontal section taken through the exhaust-passage and the hot tube therein; and Fig. 4 is a detail perspective view, on an enlarged scale, illustrating the lateral projection on the arm of the cut-01f valve.

Similar letters designate corresponding parts in all of the views of the drawings, referring to Which A is a cylinder divided by a piston B into an explosion-chamber C and a compressionchamber D and having a port E for the admission of air to the compression-chamber, a passage F intermediate of the compressionchamber and the explosion-chamber for conducting explosive mixture to the latter, a port G, communicating with the passage F and adapted to beconnected with asource of gasolenesupply, and an exhaust-passage H, leading from the explosion-chamber.

I is a shaft journaled in the side walls of the compression-chamber and having a crank a disposed in said chamber, J a pitman connecting the piston and the said crank, and K a rolling valve bearing in the cylinder and controlling the passage F. The said valve is provided atone end and outside the cylinder with an arm 6, on which is a lateral projection 0, having a flat inner side d and a slightlyundercut shoulder e, as best shown in Figs. 1 and 4. The said projection c rests loosely in a slot f of a rod L, which is provided at its lower end with a strap g, receiving an eccentric it, fixed on the shaft I outside of the compression-chamber. 'In addition to the said slot f the rod L'is provided with a lateral projection c', from which extends a threaded rod bearing a wing-nut Z4 and a coiled spring l. The said spring l is interposed between the wing-nut 7r; and one arm on of a bell-crank lever M, which arm has an opening for the loose passage of the rod j. From this it follows that the spring Z tends to hold the arm at of the bell-crank lever against the projection 2' on rod L after the manner shown in Fig. 1. The bell-crank lever is pivotally mounted at n on the rod L and is provided on its lower arm 1) with a weight g.

In the practical operation of my novel engine air is drawn through port E and gasolene through port G into the compressionchamber D on the inward stroke of the piston B, and the mixture is compressed in said chamher on the outward stroke of the piston, so that when the piston assumes the position shown in Fig. 1 the mixture will rush into the explosion-chamber C and displace the products of the previous explosion. On the subsequent inward movement of the piston the mixture will be ignited in the ex plosion-chamber by the means presently described, and the piston will be forced outwardly and the operation described repeated. This operation will continue so long as the engine does not attain an excessively high rate of speed, and incident to the same the spring Z will act against the gravitation of the weight g to hold the end of the lever-arm an out of engagement with the shoulder a of projection c as the rod L moves up and down. When, however, the engine attains an undue high rate of speed, the weight Q will overcome the pressure of the spring Z, with the result that the end of the lever-arm m will be drawn into engagement with the shoulder eof projection 0, so that on the subsequent upward movement of rod L the arm Z) of the valve K will be moved upwardly and the valve rolled to cut off the supply of explosive mixture to the chamber C. The valve will remain in the latter position until the speed of the engine falls to normal,

' when the spring Z will overcome the gravitation of the weight g and press the lever-arm m out of engagement with the shoulder e of projection 0. Subsequent to this the projection 0 will drop to the normal position, (shown in Fig. 1,) thereby opening the valve and reestablishing the supply of explosive mixture to the explosion-chamber.

It will be readily appreciated from the foregoing that my novel governor mechanism is simple and inexpensive and at the same time sturdy and reliable in operation; also, that by adjusting the wing-nut in the strength of the spring Z may be increased or diminished to suit different conditions.

N is a hot tube disposed in the exhaustpassage H of the engine and designed to be heated by the products of combustion as the same pass from the chamber G, and P is a passage connecting the interior of the hot tube and the inner portion of the combustion-chamber C. In virtue of this construction it will be seen that the tube N will be suificiently heated by the escaping hot products of combustion to enable it, assisted by high com pression of the explosive mixture in the chamber C, to explode said mixture, thus obviating the necessity of employing a sparker or a tube heated by extraneous means.

I have entered into a detailed description of the construction and relative arrangement of the parts embraced in the present and preferred embodiment of my invention in order to impart a full, clear, and exact understanding of the same. I do not desire, however, to be understood as confining myself to such specific construction and relative arrangement of parts, as such changes or modifications may be made in practice as fairly fall within the scope of my invention as claimed.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. In an explosive-engine, the combination of an explosion-chamber, a piston-movable therein, a crank-shaft connected with the piston and bearing an eccentric, a valve'for controlling the supply of explosive mixture to the explosion-chamber; said valve being adapted to normally assume and rest in an open position, and having an arm provided withalateral projection, a rod having a strap receiving the eccentric on the crank-shaft, and also having means for receiving and guiding it on the projection of the valve-arm, and means for automatically effecting connection between the said rod and the projection on the valve-arm and moving said arm when the engine attains an excessively high rate of speed.

2. In an explosive-engine, the combination of an explosion-chamber, a piston movable therein, a crank-shaft connected with the piston and bearing an eccentric, a rolling valve for controlling the supply of explosive mixture to the explosion-chamber; said valve beingadapted to normally assume and rest in an open position, and having an arm, and a lateral projection thereon provided with a shoulder, a rod having a strap receiving the eccentric on the crank-shaft, and also having aslot receiving the projection of the valve-arm, a bell-crank lever mounted on the rod, and having an arm arranged to engage the shoulder on the projection of the valve-arm, means for normally retaining said arm of the bell-crank lever in a position to clear the shoulder of said projection, and means on the other arm of the bell-crank lever for overcoming the first-mentioned means and causing the bell-crank lever to close the valve when the engine attains an excessively high rate of speed.

3. In an explosive-engine, the combination of an explosion-chamber, a piston movable therein, a movable rod, a driving connection intermediate of the piston and the said rod, a valve for controlling the supply of explosive mixture to the explosion-chamber; said valve being adapted to normally assume and rest in an open position, and having means for guiding the said rod, and means on the rod for engaging the said guiding means of the valve when the engine attains an excessively high rate of speed, and thereby closing the valve.

4. In an explosive-engine, the combination of an explosion-chamber, a piston movable therein, a movable rod, a driving connection intermediate of the piston and the said rod, a valve for controlling the supply of explosive mixture to the explosion-chamber; said valve being adapted to normally assume and rest in an open position, and having an arm, and means thereon for guiding the rod, and means on the rod for engaging the said means on the valve-arm and thereby closing the valve when the engine attains an excessively high rate of speed.

5. In an explosive-engine,'the combination of an explosion-chamber, a piston movable therein, a rod connected with andmovable by 10 spring connected With the rod and tending to press said arm of the lever away from said projection, and a Weight on the other arm of the bell-crank lever.

In testimony whereof I have hereunto set my hand in presence of two subscribing Wit- 5 nesses.

CHARLES R. DAELLENBAUH. Witnesses:

S. Y. DoUns, J. D. SWARTZ. 

